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Trekking Sleeping Bag MT500 15 degrees Celcius - Polyester
It is ultra compact and lightweight – perfect for summer use. The 2 side zips with double sliders provide optimal ventilation. This sleeping bag can be twinned.
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About this item:
- R-value of 4.8 I Comfort Temperature 59°F/15°C I Temperature Limit: 50°F/10°C I Synthetic padding
- Size L Weight: 1.5 lbs (680 g) I Volume 4.5 L I Stuff Bag Included
- Comfortable mummy shape. 2 x 3/4 zips with a double slider for ventilation.
- Water repellent: Outer surface of the fabric is treated
Product Videos
Product Features

Optimal temperature
Comfort temperature 15°C, limit temperature 10°C. Synthetic padding
Easy to transport
For size LWeight: 680 g. Volume 4.5 Litres. Stuff Bag
Sleeping comfort
Very comfortable mummy shape. 2 x 3/4 zips with a two-way cursor for ventilation
Compatibility
Can be twinned with other models from the Forclaz MT500 range
Water repellent
Outer surface of the fabric is treated so that water runs off the surface
Questions & Answers
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Product Customer Reviews

Great value for money. Meets my expectations perfectly
Product that meets my expectations. Takes up little space once stored in its cover.
Very light, small and warm sleeping bag for summer
VERY COMFORTABLE
Very protabel and easy to carry
Compact sleeping bag that can withstand temperatures up to 10 degrees, weighs 680 grams and is very compact. Extremely suitable for camping trips and traveling.
Ras
Be careful with 10 degrees in the mountains, at 4/6 a.m....it's cool....
Too bad the inner lining is synthetic, sleeping bags were more comfortable when it was cotton...
Very light and easy to carry. Good temperature resistance
Very small in size, easy to bring for hiking.
good product
Ideal for going on an adventure
Very useful product ever I purchased
great
Additional Product Information
Composition
Padding: 100.0% Polyester ; Main fabric: 100.0% Polyester ; Carry bag: 100.0% Polyester ; Lining: 100.0% Polyester
What is the temperature rating?
We display the comfort temperatures on all our sleeping bags, tested by an independent laboratory (AITEX) in compliance with European standard ISO 23537-1:2022. The comfort temperature rating is the lower limit at which the user in relaxed posture is generally in thermal equilibrium and feels neither too cold nor too hot (for a standard woman in normal conditions of use). Choose your sleeping bag according to this criterion.
What is the temperature rating (lower limit at which you feel comfortable)?
The comfort limit temperature is the temperature limit at which a person curled up in the sleeping bag is in general thermal equilibrium, neither too cold nor too hot (determined for a man in normal conditions of use).We recommend using an insulation mattress to optimise your thermal comfort.
An important clarification concerning the iso 23537-1 standard
In the context of this standard, the measurement protocol of a sleeping bag’s thermal protection uses a mattress with thermal resistance equal to an R-value of 4.8.This means that by using a less insulating mattress, the thermal performance of your sleeping bag will be lower.We therefore recommend you use an insulating mattress to optimise your thermal comfort.
Tips before getting into your bag
Dress simply (1 layer of clothing is enough). Warm-up your extremities: hats, gloves, socks, hand/feet warmers, rubdowns, etc. A flask of hot water can be used as a hot water bottle (as long as there's no chance of it accidentally opening!) Contract your muscles (70% of the energy consumed is converted into heat) but do it without moving as this could create a draught. Use a bag liner to optimise warmth and avoid washing your sleeping bag too frequently.
Style
A generous mummy shape that is wide at the shoulders and narrow at the feet to optimise thermal insulation (no heat loss) and make the product more compact, while maintaining some freedom of movement.Shoulder width 70 cm, height at feet 32 cm in size L, 62/28 in S, 66/30 in M, 74/34 in XL
Weight and dimensions
Size S: 590 g, user up to 1.59m tall. Bag dimensions: L 27 cm Ø 12.5 cm. Volume 3.3 L.Size M: 630 g, user from 1.60m to 1.69m tall. Bag dim.: L 27 cm Ø 13.5 cm. Volume 3.9 L.Size L: 680 g, user from 1.70m to 1.84m tall. Bag dim.: L 27 cm Ø 14.5 cm. Volume 4.5 Litres. Size XL: 740 g, user from 1.85m to 2m tall. Bag dim.: L 27 cm Ø 15.5 cm. Volume 5.1 L.Volume & dimensions may vary according to the compression applied to the product.
Functions
Ergonomic hood with drawcord.A baffle along the zips prevents heat loss.Double-slider zips for optimal ventilation.The top of the sleeping bag can be opened with the two side zips.
Want to know more about the wadding?
We use 1 layer of 100% polyester wadding (90% recycled) of 60 g/sqm.It retains its warmth even when wet.
Compatibility
Can be twinned with all the Forclaz MT500 sleeping bag models.Can be twinned with the older models in the 2017 ”Ultralight” and 2018 ”Light” ranges.
Product testing
All our sleeping bags undergo mechanical tests that test the performance and resistance of the sleeping bag to guarantee better sleep and recuperation (thermal resistance, resistance to abrasion, comfort, etc). We also carry out many tests in the field, in real conditions.
Storage instructions
You can easily store your bag by stuffing it loosely into its cover, feet section first. To keep it fluffed up & ensure good thermal performance, remove from its cover, extend, store it in a dry place.
Origin
Imported
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